Apparatus for grooving rolls



Feb. 7, 1950 v. s. JACKSON APPARATUS FOR GROOVING ROLLS Filed April 29,1948 2 Sheets-Sheet l N will NH WWll a k, 3 Q m A *m I I q- EU w A H In;'HI' L p H w W, &

M... 1 HIII....I"1..H 'H N 1 Z X i TORNfK Feb. 7f, 11950 v. s. JACKSON2,496,395

APPARATUS FOR GROOVING ROLLS Filed April 29, 1948 2 sneets-sheet 2 IIIHIIN V EN TOR. VIRG/L 6T JACKSON.

ATTORNffi Patented Feb. 7, 1950 Virgil s. Jackseifi-Weirton, W. va,assign'or to National Steel Corporation, a corporation of Delawaremutton [fiiril 2'9, 1948, Serial No. 23,885

I Claim.

The present invention relates to improvements in apparatus for cuttinggrooves in rolling fiilll rolls and more particularly relates to app aratus' for cutting a plurality of parallel longitudinal grooves in theperipheral surfacepf bloon'iiiig mill rolls. This operation is commonlycane-a ragtime When rolling a steel ingot to form e tiq m, billet, slab,bar, or the like, the blooming rolls receiving the ingot are oftenfvprevi'ded" with parallel longitudinal grooves arranged aroun theperiphery of the roll Tnes spe ee; relatively shallow grooves areprovided to increase the bit of the blooming rolls and to aid inpuflli'ig or drawing the ingot into the rolls. These bleom ing millrolls are very large and heavy and we gh a number of tons, It as beerthe practice to place the roll on a suitable machine by me ns of acrane and to then cut or machine fewgrooves in the roll, depending onecapacity of the cutting macnmezgrne era some other powerful lifting eevee; is j to turn the heavy roll sufilcintly about tudinal axis to permitthe cutting oi tional groove or grooves in flit peiiili al face. Thesestepsare repeated unnr th entire periphery of the roll as reee ve'a the:desired number of grooves. This procedure is very slow and laborious andrequires an enc e'ssjive' a'lnou'nt' of time. It is" commonra'pticetotaiieabbut a to; hours to cut the grooves in a blooming 1-011.In addition; it is" difficult to accurat ely p tion the roll forproperly cutting th'seQgijo 'es and if these grooves are not outcorrectly, the roll will not function properly. I k

Accordingly, it is an object of thefprese 1 vention to provide animproved apparatus for ragging blooming mill rolls. I H v Another objectof the present nterme ate provide an improved apparatus ro'r euttlnggrooves more accurately in blooming mill rolls" in less time thanheretofore required.

Another object of the present invention is to provide an improvedapparatuswhich can be readily positioned on a cutting machine forturning a blooming mill'roll to accurately positionthe roll for cuttinglongitudinal grooves-in its peripheral surface and which can be readilyremoved from the cutting machine.

A further object of the present invention ye provide an improvedpowerfactuated p0 able mechanism for indexing a blooming mill r'oiltoaccurately and successively positioning for successively cuttingaseries'of parallelgiooves' in the peripheral surface of the roll.

2 The present invention provides an improved power-actuated mechanismwhich can be readily positioned on a suitable cutting machine, such as aplaner, for intermittently turning a blooin ing mill roll about itslongitudinal axis. The mechanism is portableso that it canine readilymoved and positioned and it includes aro'tatably supported member havingits center portion shaped to fit over the Wobbler of the blooming roll.The Wobbler engaging member is con nect'ed through a gear train to amotorio'r turning the roll to position the roll for the successive cuts.When using this mechanism, itis possible to reduce the time required forcutting the grooves in a blooming mill roll from the usual 8 to 10 hoursto 3 to 1 hours, or less.

These and other objects and advantages will become" more apparent whenconsidering the following detailed description, taken with theaccompanying drawings, in which;

lligure l is a side elevational view of apparatus embodying theprinciples of the present invention;

Figure 2 is a plan view, partially in section, of the apparatus ofFigure l; and v Figure 3 is an enlarged sectional view, taken along line3-3 of Figure 1, in which the bloom; ing mill roll has been omitted tomore clearly show the structures of the apparatus.

Referring more particularly to the drawings a' blooming roll It includesa relatively large, work engaging center portion Ii adapted: to roll asteel body, such as an ingot, and reduce it in cross-sectional size toform a bloom. The lolo'oinE-l ing mill roll in also includes roll necksi2 which are adapted to be rotatably mounted in the tear; ings of a rollmill stand, not shown, when in use; At least at one end'of thefroll 8there is awobbler l 3 which is' an irregularly s'l' aped' portionadapted to fit into a correspondingly shaped opening in a drive gear,not shown. When cutting grooves in blooming mill outne' roll istransferred y a some m ns) su h. a a a t he mechanisnrior cutting thegrooves, As is shown in the drawings, the roll I 0 isrotatably supportedme pair of V blocks [4 and I5 mountedon a bed. 16' of a planer. The bedI6 is slidably supported for movement back and forth along the ways ITof" the planer or other cutting machine. The d1- rectionof movement ofbed lii'andthe r011 Hl'is' parallel with the longitudlnalaxis rt of theion. A ca n e a; e ali ting on n-j. pert-arm position for cutting agroove 2| in' the peripheral surface of the roll I when'the roll is'moved longitudinally to effect relative movement of the tool I9 alongthe surface of the roll.

An indexing mechanism 23 for turning the roll I about its longitudinalaxis I is removably mounted on the planer bed I6; The mechanism 23includes a supporting or base plate 24 on which are mounted a pair ofspaced side plates 25. The plates 25 are connected and held together bya plurality of bolts 26 and are spaced apart by the spacers 21, one ofwhich is provided for each bolt 26. A cover 29 extends about the sideplates 25 for preventing the entrance of dirt and damage to themechanism. The mechanism 23 includes a relatively large wrench member 30having an outer ring gear 32 extending entirely around its periphery andbetween the plates and includes spaced, longitudinally extending bearingshoulders 33 disposed on opposite sides of the ring gear 32 whichrotatably support the wrench member in the side plates 25. The wrenchmember 30 is also provided with a central opening 34 shaped to fit theWobbler I3 so that when the member 30 is rotated, as hereinafterdescribed, the roll is also rotated.

The power-actuated driving means for rotating member 30 and roll I0includes a motor 35 mounted on channels 35 and connected to a gearreducer 37 for driving gear 38 which meshes with a gear 39 mounted onand connected to a short shaft 40. A second gear 4| is also mounted onand connected to the shaft 40 in position to engage the ring gear 32.The shaft 40 is rotatably mounted in the side plates 25; Rotation ofmotor 35 rotates gears 38, 39, and 4| to turn the member 30 and the rollII]. Bearing metal is provided at 42 to form bearing surfaces in sideplates 25 for the shoulders 33 of wrench'member 30 to reduce frictionand the force required to turn the roll I0. This bearing metal may beseparate rings or may be deposited by welding.

The planer bed I6 may be moved back and forth along the ways I1 in anysuitable manner. As shown in the drawings, a rack 44 is mounted on theunder side of bed I6. A reversible, powerdriven gear means, not shown,meshing with rack 44, and of the type generally used for moving largeplaner beds, may be provided for moving the bed I6.

The mechanism 23 includes a plate 45 which can be readily removed fromor placed in position on the bed I6.

' When the blooming mill roll I0 is to be grooved,

the V blocks I4 and I5 are mounted on the planer bed I6. The roll I0 isthen lifted onto the planer 60 bed I6 by means of a suitable crane andthe roll necks I2 placed in the notches of the V blocks. The V blocksare so positioned that the longitudinal axis I8 of the supported roll isparallel to the direction of the movement of the planer bed I5 along theways I1. After the roll is in position, the indexing unit 23 is placedon the planer bed and the wrench member 30 fitted over Wobbler I3. Ifnecessary, the motor 36 may be energized to turn the wrench member 30 sothat the Wobbler receiving recess 34 will be correctly aligned with theWobbler I3. If desirable, the crane used to lift the roll I0 intoposition may be used to hold at least the Wobbler end of the roll in aslightly elevated position to facilitate fitting the wrench 4 member 30onto the Wobbler I3. After the indexing unit 23 is in position, the rolland indexing unit may be lowered so that the roll necks I2 fit into theV blocks I4 and I5. When the indexing 5 unit is in position, it may beclamped or fastened 10 then adjusted on the support 20, if necessary, so

(as to be in position to cut a groove 2I. The

planer bed is then moved along the ways I I so as to move the roll pastthe cutting tool. One or a plurality of strokes may be required to cut agroove in the surface of the roll. After a groove has been completed,the motor 36 is energized through suitable control means to turn thegears 38, 39;"and 4I and rotate the wrench member 30 and the rollthrough a few degrees about the longitudinal axis of the roll. By meansof the indexing unit 23, the roll I0 is readily and quickly turned toposition the roll for the necessary cut. The bed I6 is then again movedalong the ways Il so as to effect relative movement of the tool I9,

I claim:

An indexing unit for turning a blooming mill roll about'its longitudinalaxis to position the roll for cutting a plurality of parallellongitudinal grooves in the roll surface, said roll having anirregularly shaped Wobbler on at least one end and said'unit comprising,in combination, support means including stationary longitudinally spacedapart plates, a bearing on each plate, said bearings presentinglongitudinally spaced apart bearing surfaces each disposed in a planenormal to the longitudinal axis of the roll, a wrench member having aWobbler receiving recess extending longitudinally through the memberwith the recess being shaped to fit over the Wobbler and have the-Wobbler extend therethrough, a ring gear extending about the externalperiphery of the wrench member and extending outwardly between thespaced plates, said wrench member having longitudinally extendingbearing shoulders disposed on opposite sides of the ring gear and saidbearing shoulders being rotatably mounted onsaid bearing surfaces, gearmeans including a gear rotatably mounted on and between said plates andmeshing with said-ring gear, and a drive motor connected to the gearmeans for actuating the gears and rotating the wrench member and theroll.

VIRGIL S. JACKSON.

REFERENCES CITED UNITED STATES PATENTS 7 Number Name Date 259,043Reynolds June 6, 1882 271,380 Tucker Jan. 30, 1883 1,036,105 HartnessAug. 20,1912 2,137,462 Romaine Nov. 22. 1938 v

